# Smart Call Blocker vs PrefixBlock

Smart Call Blocker and PrefixBlock are too close to call on the numbers: across 6 compared parameters — price, update cadence, ads and in-app purchases among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.

Both are free to download. Smart Call Blocker sells 3 in-app purchases, starting at $1.99 per month and PrefixBlock sells 3 in-app purchases, starting at $0.99 per month. Whichever you choose, the download price is not the number that matters.

Both ship on a similar rhythm, roughly every 3 days. Both last shipped on October 25, 2026.

## The numbers

| Metric | Smart Call Blocker | PrefixBlock |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.7 (3 ratings)](https://appshunter.io/ios/app/smart-call-blocker/id6762715040/reviews)** | — |
| Number of ratings | **3** | — |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 3 days | Every 3 days |
| Monetization | Freemium | — |
| Size | 7 MB | 4 MB |
| Requires iOS | **17.0** | 17.6 |
| Devices | iPhone | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Van Khanh Nguyen](https://appshunter.io/developer/1894978274) | [Phung Doanh](https://appshunter.io/developer/965062916) |

## What reviewers say

### Smart Call Blocker

[App page](https://appshunter.io/ios/app/smart-call-blocker/id6762715040)

Block unwanted calls with surgical precision using pattern matching. Define rules with wildcards to block entire number ranges, offering robust privacy and control over incoming calls. Works offline and at the system level for seamless protection.

**Highlights:** Pattern matching with wildcards, Block number ranges, System-level blocking via CallKit, 100% offline operation, Caller ID labels, Unlimited blocking rules (Premium)

**Features:** Family Sharing

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium Monthly | $1.99 | per month |
| Premium Yearly | $14.99 | per year |
| Premium Trọn Đời | $24.99 | one-time |


### PrefixBlock

[App page](https://appshunter.io/ios/app/prefixblock-spam-call-filter/id6800204952)

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Chặn đầu số pro tháng | $0.99 | per month |
| Chặn đầu số pro năm | $4.99 | per year |
| Chặn đầu số trọn đời | $9.99 | one-time |


## Frequently asked questions

### Is Smart Call Blocker free?

Smart Call Blocker is free to download, with in-app purchases available.

### Is PrefixBlock free?

PrefixBlock is free to download, with in-app purchases available.

### Do Smart Call Blocker or PrefixBlock have ads?

Neither Smart Call Blocker nor PrefixBlock shows ads.

### Which is updated more often, Smart Call Blocker or PrefixBlock?

Smart Call Blocker ships an update every 3 days, and PrefixBlock every 3 days. Most recently, Smart Call Blocker was updated on October 25, 2026 and PrefixBlock on October 25, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*